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Handle buffering in fgetpos / fsetpos.

This commit is contained in:
Lionel Ulmer 2005-01-04 20:37:54 +00:00 committed by Alexandre Julliard
parent ac6a413bf5
commit 66725349d5
1 changed files with 31 additions and 3 deletions
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34
dlls/msvcrt/file.c
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@ -2518,7 +2518,20 @@ MSVCRT_FILE* MSVCRT_freopen(const char *path, const char *mode,MSVCRT_FILE* file
*/
int MSVCRT_fsetpos(MSVCRT_FILE* file, MSVCRT_fpos_t *pos)
{
return _lseek(file->_file,*pos,SEEK_SET);
/* Note that all this has been lifted 'as is' from fseek */
if(file->_flag & MSVCRT__IOWRT)
msvcrt_flush_buffer(file);
/* Discard buffered input */
file->_cnt = 0;
file->_ptr = file->_base;
/* Reset direction of i/o */
if(file->_flag & MSVCRT__IORW) {
file->_flag &= ~(MSVCRT__IOREAD|MSVCRT__IOWRT);
}
return _lseeki64(file->_file,*pos,SEEK_SET);
}
/*********************************************************************
@ -2545,8 +2558,23 @@ LONG MSVCRT_ftell(MSVCRT_FILE* file)
*/
int MSVCRT_fgetpos(MSVCRT_FILE* file, MSVCRT_fpos_t *pos)
{
*pos = MSVCRT_ftell(file);
return (*pos == -1? -1 : 0);
/* This code has been lifted form the MSVCRT_ftell function */
int off=0;
*pos = _lseeki64(file->_file,0,SEEK_CUR);
if (*pos == -1) return -1;
if(file->_bufsiz) {
if( file->_flag & MSVCRT__IOWRT ) {
off = file->_ptr - file->_base;
} else {
off = -file->_cnt;
}
}
*pos += off;
return 0;
}
/*********************************************************************